From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <sourceware-bugzilla@sourceware.org>
Received: by sourceware.org (Postfix, from userid 48)
	id E44873858D1E; Wed, 15 Feb 2023 00:22:18 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E44873858D1E
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org;
	s=default; t=1676420538;
	bh=r6tE4OxFTeKJ9kRETBWqOSYN0DiuG8B69SanbErEbnI=;
	h=From:To:Subject:Date:From;
	b=Gt8yhYlDQmCQ8E1hPC+nmlZ9jIsFvTL9KjSzp7CWV2x/6ggOVhSa+LCXON9FWW2OB
	 9RSEdx/Gv5toSo0tf6XK0adCR6QxPPWBNdYYrzRv/2nW57KWTndkpllhJFPPRlAbSO
	 qihp5TvxLnaavS4+QP/no5AYUaJxOmrZc0ymvhzQ=
From: "joanbrugueram at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/30125] New: [regression, bisected] glibc-2.37
 creates new symlink created in for libraries without soname
Date: Wed, 15 Feb 2023 00:22:18 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: glibc
X-Bugzilla-Component: dynamic-link
X-Bugzilla-Version: 2.37
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: minor
X-Bugzilla-Who: joanbrugueram at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at sourceware dot org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-30125-131@http.sourceware.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://sourceware.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <glibc-bugs.sourceware.org>

https://sourceware.org/bugzilla/show_bug.cgi?id=3D30125

            Bug ID: 30125
           Summary: [regression, bisected] glibc-2.37 creates new symlink
                    created in for libraries without soname
           Product: glibc
           Version: 2.37
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: dynamic-link
          Assignee: unassigned at sourceware dot org
          Reporter: joanbrugueram at gmail dot com
  Target Milestone: ---

Since installing glibc-2.37 I have noticed that `ldconfig` creates symlinks=
 it
did not previously create for libraries without a soname.

In particular, if a library is for exmple named `libsomething.so.123.456.78=
9`,
running `ldconfig` will now create a symlink named `libsomething.123` point=
ing
to `libsomething.123.456.789`, whereas previously it did not create this
symlink.

A complete reproducer is:

    #!/usr/bin/env sh
    set -eu

    rm -rf sonametest
    mkdir -p sonametest/etc sonametest/usr/lib
    gcc /dev/null -o sonametest/usr/lib/libtestsoname.so.123.456.789 -shared

    ldconfig -r sonametest
    ls -l1 sonametest/usr/lib/

Output with glibc-2.36:

    -rwxr-xr-x 1 user user 14520 11. Feb 12:34 libtestsoname.so.123.456.789

Output with glibc-2.37:

    lrwxrwxrwx 1 user user    28 11. Feb 12:34 libtestsoname.so.123 ->
libtestsoname.so.123.456.789
    -rwxr-xr-x 1 user user 14520 11. Feb 12:34 libtestsoname.so.123.456.789

I have bisected the change in behavior to commit
8ee878592c4a642937152c8308b8faef86bcfc40 "Assume only FLAG_ELF_LIBC6 suport=
".
It appears that the refactor in `implicit_soname` picked the wrong branch of
the `if` so `implicit_soname` now behaves always behaves as it did for libc4
libraries.

The only negative effect I have noticed from this is that unnecessary files=
 are
created on the system.

--=20
You are receiving this mail because:
You are on the CC list for the bug.=